Genie S-60 HC, Service Manual

Page: 138 / 461

4 - 32 S-60 • S-65 • S-60 TRAX • S-65 TRAX Part No. 147753
S-60 HC • S-60X • S-60XC
December 2013 Section 4 • Repair Procedures
4-5
Boom Extend/Retract Cables
How to Adjust the Boom Extend/
Retract Cables
The boom extend/retract cables are responsible for
the extension and retraction of the number 3 boom
tube. Proper adjustment of the boom extend/retract
cables and related components on a regular basis
is essential to good machine performance and safe
machine operation. The boom extend and retract
functions should operate smoothly and be free of
hesitation, jerking and unusual noise.
Note: Perform this procedure with the boom in a
horizontal position.
1 Fully retract the boom.
2 S-60, S-60X, S-60XC, S-65, S-60 TRAX and
S-65 TRAX: Remove the boom end cover
retaining fasteners and remove the cover.
S-60 HC: Remove the boom end cover from the
pivot end of the boom while guiding the small
cable from the string potentiometer out of the
slot of the cover. Rest the cover and string
potentiometer on the counterweight.
Component damage hazard. The
cable from the string potentiometer
can become damaged if it is
kinked or pinched.
3 Inspect the threaded ends of the boom extend
cables. The threads must be clean and in good
condition with no damaged threads.
4 Adjust the extend cable adjustment nuts until
approximately 1.5 inches / 4 cm of threads are
visible past the nylock nut.
Note: If the cables have been replaced, be sure the
adjustment nuts have been replaced. Do not re-use
the existing nuts.
5 Extend the boom until there is approximately 3
feet / 1 m of travel left. Do not fully extend the
boom.
6 Locate the retract cable adjustment nut on the
bottom of the number 1 boom tube at the
platform end of the boom.
7 Using a dial type torque wrench, torque the
retract cable adjustment nut to 32-36 ft lbs /
43-49 Nm using gentle and steady torque.
8 Retract and extend the boom approximately
3 feet / 1 m two times and stop during the
extension cycle. This will create slack in the
retract cables.
Note: Be sure to not fully extend the boom. Stop
when there is approximately 3 feet / 1 m of
travel left.
9 Repeat steps 7 and 8 two to three times.
10 Fully extend the boom then retract the boom
approximately 12 inches / 30 cm.
11 At the pivot end of the boom, visually inspect
the boom extend cables for even cable droop or
sag.
Note: If the boom extend cables are uneven,
tighten the boom extend cable adjustment nut at
the pivot end of the boom for the appropriate cable.
BOOM COMPONENTS